Fig. 9

Effect of ureaplasma urealyticum on normal sperm morphology. UU: Ureaplasma urealyticum, SD: Standard deviation, CI: confidence interval. Meta-analysis was performed using a random-effect model when p-value < 0.1 or I.2 > 50%; otherwise, a fixed-model effect is used. Data are shown as standardized mean difference and Confidence interval (CI)